TM 10-3950-672-10
Table 5-1. Operator Preventive Maintenance Checks and Services Continued
INTERVAL
ITEM TO BE
NOT FULLY
ITEM
CHECKED OR
PROCEDURE
MISSION
NO.
B
SERVICED
CAPABLE IF
SAFETY & LOCKING
DEVICES
20
DURING
Control Levers
Check for proper
Any control lever
& Linkage
operation of all control
or pedal fails to
levers and pedals.
operate.
Verify that all controls
operate without
binding.
21
DURING
Swing Brake
Check for proper
Superstructure
operation of automatic
continues to move
swing brake.
with swing lever in
neutral position.
Chattering,
grinding, or
inability to stop.
22
DURING
Antitwo-Block
CAUTION
System
Do not allow the
hook block to
contact the lower
boom nose sheave.
Check for proper
Antitwo-block
operation of the
system inoperable
antitwo-block system
by slowly raising the
empty hook block until
it contacts weight
suspended from boom
nose. Verify that hoist'
cannot be raised.
23
DURING
Steering
Check steering for
Steering wheel
smooth and proper
binds or turns
operation.
rough.
24
WEEKLY
Battery
WARNING
Do not smoke or
allow flame or spark
in the vicinity while
checking the
battery. The
battery generates
hydrogen, a highly
explosive gas.
5-20
